Augusta Amadio Posted April 14, 2020 Report Share Posted April 14, 2020 Hi, I re-installed Nitro PDF 4.91 on my computer using the disc, but it will not allow me to activate again and only works in trial mode. I have tried to find serial number on your activation portal, but it can't find the number (i'm assuming it's because my software is PDF only, not Pro). Are you able to assist with this please. Link to comment Share on other sites More sharing options...
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